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Finding the Fourth Proportional to 75,473.87, 113,210.79 and 28,087.73

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Solution

The fourth proportional to 75,473.87, 113,210.79 and 28,087.73 is: 42,131.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,473.87 : 113,210.79 = 28,087.73 : x
  2. Step 2: Convert to fraction form
    75,473.87/113,210.79 = 28,087.73/x
  3. Step 3: Cross multiply
    75,473.87x = 113,210.79 × 28,087.73
  4. Step 4: Simplify right side
    75,473.87x = 3,179,833,641.88
  5. Step 5: Solve for x
    x = 3,179,833,641.88/75,473.87
  6. Step 6: Final answer
    x = 42,131.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.